Finding the Fourth Proportional to 20,186,973.85, 27,858,317.70 and 11,484,959.17
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Solution
The fourth proportional to 20,186,973.85, 27,858,317.70 and 11,484,959.17 is: 15,849,410.80
Step by Step Solution
- Step 1: Write the proportion equation
20,186,973.85 : 27,858,317.70 = 11,484,959.17 : x - Step 2: Convert to fraction form
20,186,973.85/27,858,317.70 = 11,484,959.17/x - Step 3: Cross multiply
20,186,973.85x = 27,858,317.70 × 11,484,959.17 - Step 4: Simplify right side
20,186,973.85x = 319,951,641,329,388.31 - Step 5: Solve for x
x = 319,951,641,329,388.31/20,186,973.85 - Step 6: Final answer
x = 15,849,410.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.